Home › Mark O'Brien
Mark O'Brien
Actor·b. 1984· St. Johns, Newfoundland, Canada
7 horror credits
Mark O'Brien (born May 7th, 1984) is a Canadian actor and director. He is best known for playing the role of Des Courtney in Republic of Doyle (2010) and Tom Rendon in Halt and Catch Fire (2014).
Actor7 films
The Voices of Our Mother
William
2026
Shadow of God
Mason Harper
2025
The Righteous
Aaron Smith
2021 3.5
Ready or Not
Alex Le Domas
2019 3.9
Bad Times at the El Royale
Larsen Rogers
2018 2.5
Parallel
Josh
2018
The Dark Stranger
Mark
2016
Director2 films
The Voices of Our Mother
Director
2026
The Righteous
Director
2021 3.5
Writer2 films
The Voices of Our Mother
Writer
2026
The Righteous
Writer
2021 3.5
Producer1 film
The Righteous
Executive Producer
2021 3.5